This operator returns -*value1* if *value1* < 0
and *value1* if *value1* > 0

*num1* *num2* **add** *num3*

This operator returns the sum of the two arguments.

This operator returns the arctangent of
the ration *numerator*/*denominator*.

This operator returns the smallest integer greater than *value1*

This operator returns the cosine of *value1*, where *value1*
is an angle expressed in degrees.

*num1* *num2* **div**
*num3*

This operator returns the result of dividing *num1* by
*num2*. The result is always a real.

This operator returns the value of *base* raised to the
*exponent* power.

This operator returns the greatest integer less than *value1*

This operator returns the natural logarithm of *value1*.

This operator returns the base 10 logarithm of *value1*.

This operator multiplies the first two operands on the stack and pushes the result back onto the stack. The result is an integer if both operands are integers and the product is not out of range. If the product is too big, or one of the operands is a real, the result will be a real.

This operator returns -*value1*.

This operator returns the nearest integer to *value1*,
or the nearest, largest integer in the case of a tie.

This operator returns the sine of *value1*, where *value1*
is an angle expressed in degrees.

This operator returns the square root of * value1*.

*num1* *num2* **sub** *num3*

This operator returns the result of subtracting *num2*
from *num1*.

This operator returns *value1* without its fractional part.
Thus 4.3 becomes 4, -3.8 becomes -3.

David Maxwell, who is still writing this, would like to hear your comments and suggestions. And remember, parts of this manual are based on P.J. Weingartner's work: A First Guide to PostScript.